from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The standard deviations of the sample in a frequency distribution, obtained by dividing the standard deviation by the total number of cases in the frequency distribution.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A measure of how spread out data values are around the mean, defined as the square root of the variance.
Sorry, no etymologies found.